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CV0-002 · Question #225

A company is experiencing latency problems connecting to the cloud. Which of the following should an administrator check FIRST?

The correct answer is A. Router ARP tables. When troubleshooting latency issues to the cloud, an administrator should first verify the router's ARP tables to ensure correct and up-to-date MAC-to-IP address mappings, as errors can cause packet delivery delays.

Troubleshooting

Question

A company is experiencing latency problems connecting to the cloud. Which of the following should an administrator check FIRST?

Options

  • ARouter ARP tables
  • BBroadcast traffic
  • CBandwidth utilization
  • DSubnetting

How the community answered

(42 responses)
  • A
    83% (35)
  • B
    2% (1)
  • C
    5% (2)
  • D
    10% (4)

Why each option

When troubleshooting latency issues to the cloud, an administrator should first verify the router's ARP tables to ensure correct and up-to-date MAC-to-IP address mappings, as errors can cause packet delivery delays.

ARouter ARP tablesCorrect

Latency issues can often stem from incorrect or incomplete routing information at a fundamental level. Stale or incorrect ARP (Address Resolution Protocol) entries in a router's table can cause packets to be misdirected or dropped while the router attempts to re-learn the correct MAC address for an IP address, directly impacting local network reachability before packets are forwarded to the cloud.

BBroadcast traffic

Broadcast traffic typically contributes to local network congestion but is less likely to be the primary cause or the first thing to check for latency to the cloud, as routers usually limit broadcast domains.

CBandwidth utilization

While bandwidth utilization can cause latency, checking ARP tables is a more fundamental first step to rule out local routing or addressing problems before assuming network congestion as the root cause.

DSubnetting

Subnetting issues generally lead to complete connectivity failure rather than just latency, and these are typically identified during initial network setup, making it an unlikely first check for new latency problems.

Concept tested: Network troubleshooting fundamentals - ARP

Source: https://learn.microsoft.com/en-us/windows-server/networking/technologies/arp/arp

Topics

#network latency#troubleshooting#bandwidth utilization

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